Does a higher price mean a better whistle?
That depends almost entirely on what you want out of the whistle, doesn’t it?
If we are just buying for the name, we probably don’t really know whistles enough to be judging. People who think the price of the whistle makes the player are often disappointed in even the best whistles, while people who are not familiar with the differences and individual characteristics are often very impressed with relative cheapies. Individual taste plays a great deal in the choices, so an overall quantifying of quality is difficult to come up with.
Buying a high priced whistle won’t make you any better a whistle player, though it might just make it much more pleasant for you to practice and for others around you to tolerate your practice. The main impediment to a good sounding whistle is still the player, afterall.
Paying more for a whistle won’t automatically guarantee that you get a better whistle, but if you choose a known and respected maker, you will pretty much guarantee that you will either get a very good whistle that you will like, or be able to either return it to the maker for refund or trade, or sell it for what you paid for it.
The price of the whistle reflects not just the (constantly rising) cost of the materials, but the time, study and effort of the maker. If the maker makes a fine instrument and then discovers ways to make that same quality more standard or easier to maintain in higher quantities, it still won’t be cheap. If they feel that maintaining a hands-on approach for the design and finishing, but know that getting the basics done by someone else will not only save them time and effort, but not adversely affect the finished outcome, they pay for that. It is all reflected in what they charge - time is money, after all, and we are asking for their best efforts. Those that do it all themselves really probably ought to charge even more than they do now.
Looking at a tube of metal with some lumpy, holey bits, maybe even some plastic, doesn’t easily equate in our minds or wallets with a couple of hundred dollars US… however, looking at hours of effort, years of experience, exacting work and reliable product, comes a whole lot closer to comfort with the price tag.
There are many players who opt for high end whistles. If they care about the sound rather than the name, there must be some good reasons for them to choose those whistles, and it is likely because they know they will get an instrument that will sound the way they want it to, will do what they want to do with it, and will match the quality they require.
On the other hand, whistles, even the expensive ones, are comparatively quite inexpensive. Just be glad you don’t have to have different guitars for each couple of keys, or, wow… a harp. 